Operation Manual

Simrad PI54

850-165186 / Rev.B

4 Press the GAIN+ button repeatedly until the Clearance

dialogue appears.

5 Select minimum and/or maximum distance for the alarms,

and activate each alarm separately.

6 Press the ENT key to store the parameters and exit.

The clearance alarm will take the current depth reading from the

echo sounder and subtract the current depth reading from the

Depth sensor. The calculated depth of the trawl or towed body is

then compared to the alarm limits. Due to the distance between

the vessel and the trawl, you will have ample time to make the

necessary adjustments to avoid damage.

If your Depth sensor is mounted to the h eadrope, you must

create a manual depth marker. This is made in the Trawl inf o

dialogue.